JP2012062030A - Saddle ride-type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a saddle ride-type vehicle including a storage box under a seat, capable of securing a storage capacity of the storage box, giving a sufficiently large straddling space and exhibiting an excellent straddling property.SOLUTION: The saddle ride-type vehicle includes: a seat 40 having a seat skin 41, a cushion material 42 and a seat bottom plate 30; a storage box 5 located under the seat; a hinge mechanism 15 for journaling the seat 40 so as to be turnable with respect to the vehicle body frame; and a floor tunnel placed in an area in front of and lower than the seat 40 in which a straddling space 3 is formed in an area over the floor tunnel and in front of the seat 40. A lid member 20 which is a body separated from the seat bottom plate 30 is disposed over the storage box 5; a seat-side hinge member 10 which is configured to turn about a rotation axis 15a of the hinge mechanism 15 is connected to a front portion of the lid member 20, and the seat bottom plate is connected to a rear portion of the lid member 20.

Description

  The present invention relates to a saddle riding type vehicle, and more particularly to a saddle riding type vehicle in which a space is formed in front of a seat.

  A vehicle such as a motorcycle is called a saddle-type vehicle because an occupant sits across a seat. As this saddle riding type vehicle, for example, as disclosed in Patent Document 1, a so-called low floor type saddle riding type vehicle (scooter type motorcycle) having a low floor portion on which an occupant can put his / her foot is provided. There is a vehicle called).

  The structure disclosed in Patent Document 1, for example, has a straddle space between the head pipe and a seat on which an occupant is seated, and a storage box is disposed on the lower side of the seat near the front of the seat. And the opening and closing of the storage box is a structure in which the entire seat is largely opened and closed by a hinge mechanism disposed on the lower side of the straddling space.

JP 2008-279961 A

However, since the straddle-type vehicle disclosed in Patent Document 1 has a structure in which a storage box is arranged adjacent to the straddle space, securing the straddle space, that is, ensuring ease of getting on and off and securing storage capacity. It was a conflicting issue. In particular, when the engine is large and has a structure in which the engine is disposed closer to the front of the vehicle body frame, there is a significant problem in terms of securing a straddle space.
Under such circumstances, particularly in the case where the seat bottom plate also serves as a lid member of the storage box, there is a problem that the straddle space is narrowed by the thickness of urethane that is a cushion member provided on the seat bottom plate. .

In the sheet manufacturing method, it is difficult to make an area where urethane is not formed on the sheet bottom plate, and the urethane is provided in the center of the front portion of the sheet. That is, the present situation is that urethane is also provided at the center of the front portion of the seat facing the straddling space.
Accordingly, there is a problem that the swelling caused by urethane formed on the sheet bottom plate narrows the straddling space and deteriorates the straddling property.

  The present invention has been made in view of the above problems, and includes a storage box under a seat on which an occupant is seated. The storage capacity of the storage box can be secured and a sufficient space can be secured. It is another object of the present invention to provide a straddle-type vehicle that is excellent.

  In order to achieve the above object, the invention according to claim 1 is directed to a vehicle body frame, a seat having a seat skin, a cushioning material, and a seat bottom plate, a storage box positioned below the seat, and the seat. A hinge mechanism pivotally supported with respect to the frame, a step floor on which an occupant puts his / her foot, and a floor tunnel portion arranged below the front of the seat, and above the floor tunnel portion and of the seat In a straddle-type vehicle in which a space straddling the front is formed, a lid member separate from the seat bottom plate is provided above the storage box, and the seat side rotates about the rotation axis of the hinge mechanism A hinge member is connected to a front portion of the lid member, and the seat bottom plate is connected to a rear portion of the lid member.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the lid member is configured in a substantially hemispherical shape that covers the storage box in a state of swelling above the vehicle body. And

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the invention, the lid member covers the entire opening of the storage box and contacts the entire periphery of the edge of the opening. A sealing member is provided.

  According to a fourth aspect of the invention, in addition to the configuration of the invention according to any one of the first to third aspects, the seat bottom plate is provided with a substantially hemispherical hemispherical portion on the front side of the vehicle body, and The hemispherical portion is provided with a curved notch portion in which a central portion near the front of the vehicle body is notched to form front left and right portions.

  According to a fifth aspect of the invention, in addition to the configuration of the fourth aspect of the invention, the seat bottom plate is configured such that the hemispherical portion overlaps the lid member in a plan view, and the lid has a smooth curved surface. A rear portion located on the vehicle body rear side with respect to the member is configured to have an uneven rib portion in its thickness direction.

  According to a sixth aspect of the invention, in addition to the configuration of the first aspect of the invention, the seat side hinge member and the lid member are directly connected by a fastening member, The seat bottom plate and the lid member are elastically connected via an elastic fastening member.

According to the first aspect of the present invention, the structure that closes the upper side of the storage box is configured by a lid member that is formed as a separate member from the sheet bottom plate. It can be manufactured separately from the process of forming. Since this separate manufacturing is possible, the lid member on the upper side of the storage box is separated from the manufacturing method in which the urethane on the seat bottom plate must be overlapped, and can be structured without urethane, The overhang into the space can be reduced.
In addition, the lid member can be formed of a thin and highly rigid material or shape by increasing the degree of freedom of its shape and structure as a separate member from the seat bottom plate, so that it is easy to secure a straddle space. Furthermore, since the hinge mechanism, the lid member, and the seat bottom plate are integrally connected, the storage box can be easily opened and closed by opening and closing the seat.

  According to the second aspect of the present invention, the lid member is formed in a substantially hemispherical shape, whereby the strength is increased, and even if it is thin, it can have a highly rigid structure. Therefore, the lid member can be made thin and the straddle space can be secured as well as the volume of the storage box can be secured even when the structure expands above the vehicle body.

  According to the third aspect of the present invention, the lid member covers the entire opening of the storage box, and the entire opening is sealed with the seal member. Secured well.

  According to the fourth aspect of the present invention, the seat bottom plate has no configuration facing the straddling space, so that the straddling space can be enlarged, and the front side of the seat has a hemispherical shape and further cushions. Since the members can be provided up to the left and right portions corresponding to the inside of both legs, the ride comfort can be improved.

  According to the fifth aspect of the present invention, the hemispherical surface located near the straddle space of the sheet bottom plate is formed into a smooth curved surface, so that the substantial thickness is reduced and the seat height is suppressed as much as possible. Further, the structure in which the rib portion is provided in the region where the occupant is seated can reduce the weight and the seat rigidity.

  According to the sixth aspect of the present invention, the lid member is firmly supported by the vehicle body frame by the seat side hinge member, and the rigidity at the time of opening and closing the seat is ensured. On the other hand, since the vehicle body frame and the seat are fixed via an elastic fastening member, transmission of vibration from the vehicle body can be suppressed, and riding comfort can be improved.

1 is a left side view of an embodiment of a saddle riding type vehicle according to the present invention. FIG. 2 is a schematic end view of the straddle-type vehicle according to the present invention, as viewed from the vehicle front direction, taken along the line CC of the lower part of the straddling space in FIG. 1. FIG. 2 is a schematic side view of a main part of the saddle riding type vehicle shown in FIG. 1 with a cover member for a vehicle body removed. It is a left view which shows the lid member in one Embodiment which concerns on this invention. It is the front view seen from the arrow A direction (vehicle front side) of the lid member shown in FIG. It is the bottom view seen from the arrow B direction (vehicle lower side) of the lid member shown in FIG. It is a left view which shows the sheet | seat bottom plate in one Embodiment which concerns on this invention. It is the front view seen from the vehicle front side of the seat bottom plate shown in FIG. It is the top view seen from the vehicle upper side of the sheet | seat bottom plate shown in FIG. It is a left view which shows the seat side hinge member in one Embodiment which concerns on this invention. It is the front view seen from the vehicle front side of the seat side hinge member shown in FIG. It is the top view seen from the vehicle upper side of the seat side hinge member shown in FIG. FIG. 2 is a perspective view for showing a seat attachment state in the saddle riding type vehicle shown in FIG. 1, and is a perspective view of a main part in a state where a cover member of the vehicle body and urethane of the seat are removed. FIG. 2 is a cross-sectional view for illustrating a connected state of a seat-side hinge member and a lid member in the saddle riding type vehicle shown in FIG. 1, and is a schematic cross-sectional view of a portion along a vehicle front-rear direction including a place where a fastening member is disposed. is there. FIG. 2 is a cross-sectional view for showing a connected state of a lid member and a seat bottom plate in the saddle riding type vehicle shown in FIG. 1, and is a schematic cross-sectional view of a portion along a vehicle front-rear direction including a place where an elastic fastening member is disposed. . It is an expanded sectional view for demonstrating the elastic fastening member shown in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
The drawings are viewed in the direction of the reference numerals, and Fr, Rr, U, D, R, and L shown in the drawings are the front direction, the rear direction, the upper direction, the lower direction, and the right direction of the vehicle in the embodiment. , Indicates the left direction.
FIG. 1 is a left side view of a low floor straddle-type vehicle according to an embodiment of the present invention.
A low-floor straddle-type motorcycle 1 as a low-floor straddle-type vehicle includes a main tube 52 that extends rearward from the lower end side of the head pipe 51 to the center of the vehicle body slightly downward, and an upper end side of the head pipe 51. An upper reinforcing tube 53a extending obliquely downward and rearward from the main tube 52, a down tube 54 extending obliquely downward and rearward from the front of the main tube 52, and the down tube 54 and the main tube 52 A downward reinforcing tube 53b that is connected diagonally, a seat rail 55 that extends rearward and slightly upward from the rear end of the main tube 52, a pivot that is connected to the main tube 52 and the seat rail 55 and extends in the vertical direction of the vehicle body. From the pivot plate 57 that holds the shaft 61, the subframe 56, and the like, the vehicle body frame 5 There has been configured.

  The low floor straddle-type motorcycle 1 includes a front wheel 58a that is rotatably provided at the lower end of a front fork 48 that is pivotally attached to the head pipe 51, a handle 49 that is provided at the upper end of the front fork 48, The power unit 47 is attached to the lower side of the main tube 52, the rear wheel 58b is rotatably provided at the rear end or rear of the power unit 47 via the swing arm 60, and a rear cushion.

  Further, the low-floor straddle-type motorcycle 1 has an external structure in which a front cowl 65 that surrounds the front of the head pipe 51, a seal leg 64 that surrounds the rear of the head pipe 51, and a step that extends substantially horizontally connected to the seal leg 64. A floor 67, a side cover 68 that extends rearward from the step floor 67 and surrounds the seat rail 55, and a seat 40 that is disposed on the side cover 68 and supported by the seat rail 55 and extends in the front-rear direction of the vehicle. Configured.

  A front fender 63 and a rear fender 66 are provided above the front wheels 58a and the rear wheels 58b. A rear combination lamp 18 is provided at the rear end side of the rear fender 66, and a headlamp 65 a is disposed at the foremost end of the front cowl 65. An exhaust pipe 45 is disposed below the engine 47a, and exhaust is performed from the exhaust pipe 45 via a silencer 69 on the right rear side of the vehicle. A stand 46 is rotatably provided below the pivot plate 57, and a grab rail 19 is provided on the rear side of the seat 40 so that a passenger sitting on the rear seat can grasp it.

The power unit 47 includes a speed reducing portion 47b on the rear side of the engine 47a, and is an important power transmission component that decelerates the driving force generated by the engine 47a and transmits it to the rear wheel 58b.
The occupant sits on the seat 40, places his / her feet on the step floors 67 and 67, and holds the handle 49 to maintain the riding posture.

  FIG. 2 is a view showing the floor tunnel portion 68a of the low floor straddle type motorcycle 1 according to the present invention, and is a schematic end view of the CC line shown in FIG. A power unit 47, a storage box 5, a seat-side hinge member 10 of a hinge mechanism 15 to be described later, and the like are appropriately arranged inside a floor tunnel portion 68a that is a cover member of the vehicle body shown in FIG. In addition, step floors 67 and 67 are provided on the left and right sides of the power unit 47.

With reference to FIGS. 3 to 16, the seat and the peripheral structure thereof in the low floor saddle type motorcycle 1 according to the present invention will be described.
In the present embodiment, the seat 40 is connected to the main tube 52 of the vehicle body frame 50 via the hinge mechanism 15. That is, as shown in FIGS. 3 and 13, in the hinge mechanism 15, the seat side hinge member 10 that rotates integrally with the seat 40 is connected to the front portion 21 f (see FIG. 4) of the lid member 20. Further, the seat bottom plate 30 is connected to the rear portion 21b (see FIG. 4) of the lid member 20.

  The hinge mechanism 15 is a metal member, and has a hinge mounting frame 16 which is substantially U-shaped in plan view and is mounted so as to bridge the left and right main tubes 52, and the vehicle in the hinge mounting frame 16 The seat-side hinge member 10 is configured to rotatably hold the seat 40 via the pivot shaft 15a on the mounting bracket 16a at the front end portion.

The seat side hinge member 10 constituting the hinge mechanism 15 described above will be described.
As shown in FIGS. 10 to 12, the seat-side hinge member 10 according to the present embodiment includes a connection base portion 11 having a shaft hole 13 that penetrates the rotation shaft 15 a corresponding to the mounting bracket 16 a, and a connection base portion 11. It is the structure provided with the connection arm part 12 which bends at about 90 degree | times and extends in the back of a vehicle. And the connection arm part 12 has the curved part 12a provided with the screw hole 14 corresponding to the screw hole 24 (refer FIG. 5 and FIG. 6) of the lid member 20 mentioned later.
The connecting base 11 is provided with a damper bracket 11a for attaching a damper, and a pair of left and right center cover brackets 12c provided between the connecting base 11 and the bending portion 12a are attached for attaching a center cover 10a described later. Part.

  A center cover 10 a is attached to the upper side of the seat side hinge member 10, and the upper side of the mounting bracket 16 a is covered with a front cowl 65. A space above the center cover 10 a on the rear side of the front cowl 65 is formed as a straddling space 3 on the front side of the seat 40.

A storage box 5 and a fuel tank 6 (see FIG. 3) are provided below the seat 40.
As shown in FIGS. 3 and 7, the seat 40 is provided with a cushioning material 42 on a seat bottom plate 30 for maintaining rigidity, and a seat skin covering the surface so as to wrap the cushioning material 42. 41 is provided.
In the present embodiment, the seat 40 is positioned above the storage box 5 as described above. However, what actually corresponds to the opening 5 a of the storage box 5 is configured separately from the seat bottom plate 30. The lid member 20 is disposed so as to cover the opening 5a.

Hereinafter, the lid member 20 in the present embodiment will be described with reference to FIGS.
FIG. 4 is a side view of the lid member 20 of the present embodiment as viewed from the left side in the direction of the vehicle mounting state, FIG. 5 is a front view as viewed from the direction A (vehicle forward direction) in FIG. It is the bottom view seen from the B direction (vehicle downward direction) of FIG. As can be seen from these drawings, the lid member 20 has a curved surface portion 21 whose overall shape is a hemispherical shape, and has a flange portion 22 that protrudes slightly outward from the lower end of the curved surface portion 21.

Two rows of ridges 23 (see FIGS. 5 and 6) are provided on the front side of the vehicle, and two screw holes 24 are formed in each of the ridges 23. An attachment hole 26 is provided on the rear side of the vehicle. A mounting protrusion 25 is provided (see FIG. 6).
The lid member 20 can be formed of a synthetic resin, for example.
Further, the flange portion 22 has a groove portion 28 (see FIGS. 14 and 15) shown in FIG. Although not shown in FIGS. 4 to 6, the seal member 8 is provided in the groove 28. As shown in FIG. 15, the seal material 8 is attached in a state of slightly protruding from the groove portion 28, so that the seal member 8 can be deformed in the closed state.

Accordingly, when the lid member 20 is in a state of closing the storage box 5, the flange portion 22 corresponds to the edge 5 b of the storage box 5 and can seal the storage box 5.
The lid member 20 having a substantially hemispherical shape is a structure that is strong against a pressing force from above when the storage box 5 is closed. In addition, since the storage box 5 swells in a hemispherical shape, the storage volume can be increased.

  The lid member 20 is provided not only to cover the entire opening 5a of the storage box 5, but also to the seal member 8 (see FIGS. 14 and 15) that contacts the entire periphery of the edge 5b of the opening 5a. I have. The seal member 8 is made of, for example, rubber or elastic synthetic resin, and the cross-sectional shape thereof is also configured to be U-shaped, for example. The seal member 8 is attached so that a part of the seal member 8 protrudes from the groove portion 28 when the seal member 8 is attached to the seal portion 8, thereby ensuring the sealing property of the contact surface between the lid member 20 and the storage box 5. it can.

Hereinafter, the sheet bottom plate 30 and the related structure in the present embodiment will be described mainly with reference to FIGS. 7 to 9 and FIG. 13.
As shown in FIG. 7, the seat 40 has a substantially hemispherical hemispherical portion 31 on the front side of the vehicle body and a rib portion 32 that slightly warps the rear side of the hemispherical portion 31. It has a configuration. The sheet bottom plate 30 is made of a synthetic resin and is relatively lightweight.
The structure of the hemispherical portion 31 is a structure in which a curved cutout portion 33 (see FIG. 8) in which a central portion closer to the front of the vehicle body is cut out greatly is provided. That is, by providing the curved notch 33, the front left and right portions 31R and 31L are formed on the left and right sides of the hemispherical portion 31 near the front of the vehicle body.

  Thus, the sheet 40 does not have the sheet bottom plate 30 due to the curved notch 33 at the part facing the straddling part 3. Accordingly, the straddling portion 3 can be enlarged, while the front left and right portions 31R and 31L are provided, and the cushion material 42 is provided on the front left and right portions 31R and 31L. That is, when the occupant gets on, the cushion material 42 can correspond to the inside of both legs.

  Further, the seat bottom plate 30 is configured with a smooth curved surface where the hemispherical portion 31 overlaps the lid member 20 in plan view. This is a structure in which the substantial thickness of the portion overlapping the lid member 20 is reduced by making the hemispherical portion located near the straddle portion 3 of the seat bottom plate 30 a smooth curved surface.

Further, the rib portion 32 located on the rear side of the vehicle body with respect to the lid member 20 has an uneven rib structure in the sheet thickness direction as shown in FIGS. Further, the sheet bottom plate 30 has a curved structure in which the edge portion 37 is curved toward the lower side of the sheet, and is devised so as to increase the rigidity of the entire sheet.
In the rib structure described above, for example, a plurality of long vertical ribs 34a are formed along the longitudinal direction of the sheet, and a large number of horizontal ribs 34b are formed so as to connect the vertical ribs 34a between the vertical ribs 34a.

Hereinafter, the attachment state of the seat 40 in the present embodiment will be described.
The seat-side hinge member 10 in the present embodiment is connected by a fastening member 70 as shown in FIG. 14 in connection with the lid member 20. That is, the screw hole 14 (see FIGS. 11 and 12) provided in the curved portion 12a of the connecting arm portion 12 of the seat side hinge member 10 and the screw hole 24 (see FIGS. 5 and 6) of the lid member 20 are provided. The bolt 71 penetrates and is screwed into the nut 72 and fastened. As a result, the lid member 20 is firmly supported by the seat-side hinge member 10.

  On the other hand, the seat bottom plate 30 and the lid member 20 are connected via an elastic fastening member 80 as shown in FIG. Further, as shown in an enlarged view in FIG. 16, the elastic fastening member 80 includes a male screw 81, a female screw portion 82 insert-molded on the attachment portion 35 of the seat bottom plate 30, an elastic portion 83, and a washer 84.

The elastic fastening member 80 of the present embodiment will be further described. This configuration is formed of rubber or the like in the mounting hole 26 of the mounting projection 25 of the curved surface portion 21 of the lid member 20 as shown in FIG. An elastic portion 83 is attached. The elastic portion 83 has a substantially cylindrical configuration having a through hole 83b in the center and an annular groove 83a on the outer periphery. The elastic portion 83 is attached such that the edge of the attachment hole 26 is fitted into the annular groove 83a.
A male screw 81 is screwed from the inside of the curved surface portion 21 through a washer 84. Accordingly, the lid member 20 and the seat bottom plate 30 are not in direct contact with each other, and are elastically fixed with the elastic portion 83 interposed therebetween.

The operation of the characteristic part of the present embodiment in the low floor saddle type motorcycle 1 having the above-described structure will be described.
In the present embodiment, the seat 40 is provided with locking means (not shown) for maintaining the closed state of the seat 40 inside the rear side. Therefore, when the seat 40 is closed, the lid member 20 abuts against the edge 5 b of the storage box 5 so as to crush the seal member 8. Further, since the lid member 20 is formed of a member separate from the seat bottom plate 30 and is formed in a hemispherical shape, the lid member 20 has high rigidity, and the contact with the edge portion 5b is reliably performed. The sealing property of the storage box 5 is ensured.

Further, since the seat 40 has a configuration that does not have a portion facing the straddle portion 3, the stride portion 3 can be enlarged in the seat closed state, while the occupant is on the front side of the seat 40 Thus, the cushion material 42 provided on the front left and right portions 31R and 31L can correspond to the inner sides of both legs, so that it acts comfortably.
In addition, when riding, the rear portion of the seat 40 on which the occupant is seated is interposed with the elastic fastening member 80 as described above, so that transmission of vibrations from the vehicle body is suppressed, and the ride comfort is improved. Is good.

On the other hand, an operation for opening and closing the seat 40 to use the storage box 5 will be described.
First, the lock that maintains the closed state of the seat 40 is released, and the seat 40 is operated to open upward. As a result, the entire sheet 40 rotates about the rotation shaft 15a of the hinge mechanism 15 as a fulcrum.

  At the time of the seat opening operation, the lid member 20 is firmly supported by the vehicle body frame 50 by the seat side hinge 10, and the seat bottom plate 30 is overlapped and connected so as to cover the lid member 20. The opening operation is performed with the rigidity secured. Since the rigidity is maintained in this way, the sheet opening operation is easy and performed well. Further, this open state is appropriately held by a damper connected to the seat side hinge member 10, and the seat open state is maintained.

On the other hand, when the closing operation for closing the seat 40 is performed, the seat 40 is operated to be pushed rearward against the urging force of the damper that has maintained the open state, and is closed and locked.
Even during the closing operation, the rigidity during rotation of the seat is ensured, so that the sheet closing operation is performed well.

As described above, the embodiment of the present invention has been described. For example, the shapes of the hinge mechanism 15, the seat side hinge member 10, the lid member 20, the seat bottom plate 30, and the like are not limited to the above-described embodiments, and can be appropriately changed. is there.
Moreover, in the said embodiment, although it was set as the structure which used the rubber | gum as an elastic member for the elastic part 83 of the elastic fastening member 80, it is not restricted to this, An elastic member, such as a coil spring, may be sufficient.
Moreover, in the said embodiment, although the seat side hinge member 10 and the lid member 20 were set as the fastening member 70 using the volt | bolt, not only this but the fixed structure using members, such as a rivet, may be sufficient.

1 Low floor type saddle riding type motorcycle (saddle riding type vehicle)
DESCRIPTION OF SYMBOLS 3 Crossing part 5 Storage box 6 Fuel tank 10 Seat side hinge member 15 Hinge mechanism 20 Lid member 30 Seat bottom board 40 Seat 41 Seat skin 42 Cushion material 50 Body frame 67 Step floor 68a Floor tunnel part 70 Fastening member 80 Elastic fastening member

Claims (6)

A body frame (50);
A seat (40) having a seat skin (41), a cushion material (42) and a seat bottom plate (30);
A storage box (5) located below the seat (40);
A hinge mechanism (15) for pivotally supporting the seat (40) with respect to the vehicle body frame (50);
Step floor (67) on which passengers can put their feet,
A floor tunnel portion (68a) disposed under the front of the seat (40),
In the saddle riding type vehicle (1) in which the straddle part (3) is formed above the floor tunnel part (68a) and in front of the seat (40),
A seat member (20) separate from the seat bottom plate (30) is provided above the storage box (5), and the seat rotates about the rotation shaft (15a) of the hinge mechanism (15). A side hinge member (10) is connected to a front portion (21f) of the lid member (20), and the seat bottom plate (30) is connected to a rear portion (21b) of the lid member (20). A straddle-type vehicle (1).   The straddle-type vehicle (1) according to claim 1, wherein the lid member (20) is configured in a substantially hemispherical shape so as to cover the storage box (5) so as to bulge upward from a vehicle body.   The lid member (20) includes a seal member (8) that covers the entire opening (5a) of the storage box (5) and is in contact with the entire circumference of the edge (5b) of the opening (5a). Saddle-type vehicle (1) according to claim 1 or 2, characterized in that   The seat bottom plate (30) is provided with a substantially hemispherical hemispherical surface portion (31) on the front side of the vehicle body, and the hemispherical surface portion (31) is a curved notch portion in which a central portion closer to the front of the vehicle body is notched. The straddle-type vehicle (1) according to any one of claims 1 to 3, wherein (33) is provided to form front left and right parts (31R, 31L).   The seat bottom plate (30) is configured such that a portion where the hemispherical portion (31) overlaps the lid member (20) in a plan view is formed by a smooth curved surface, and is located rearward of the lid member (20). The straddle-type vehicle (1) according to claim 4, wherein the portion is configured to have an uneven rib portion (32) in the thickness direction.   The seat-side hinge member (10) and the lid member (20) are directly connected by a fastening member (70), and the seat bottom plate (30) and the lid member (20) are elastic fastening members (80). The straddle-type vehicle (1) according to any one of claims 1 to 5, wherein the straddle-type vehicle (1) is elastically connected to each other.

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